How to cite subject categories in SFX

Categories can be cited via SFX. For example, users can browse all journals in Biology the Library subscribed to in the topic guide. The below is how to construct a category:
http://sfx.sdln.net:3210/sfxsdb/az?param_category_search_type_save=browseSubCategory&param_perform_save=searchCategories&param_category_value=[Category ID]&param_subcategory_value=[Subcategory ID]

Please find a specific 'Category ID' and 'Subcategory ID', and then replace the above [Category ID] and [Subcategory ID] with those 2 IDs respectively, for example, this is URL for Biology:
http://sfx.sdln.net:3210/sfxsdb/az?param_category_search_type_save=browseSubCategory&param_perform_save=searchCategories&param_category_value=12&param_subcategory_value=145

To view all subcategories for a particular category, the subcategory value should always be -1. You can also cite more than one subcategory in the same category. The below is how to cite Language & Linguistics, and Literature under the category of Arts and Humanities:
http://sfx.sdln.net:3210/sfxsdb/az?param_category_search_type_save=browseSubCategory&param_perform_save=searchCategories&param_category_value=2&param_subcategory_active=1&param_subcategory_value=5&param_subcategory_value=75

Categories in SFX can be exported by Category Tool. And then you can find a desired category ID and subcategory ID.

To cite a specific journal, the syntax likes this:
http://sfx.sdln.net:3210/sfxsdb?sid=ALEPH&issn=[ISSN]

For example, this is how to cite Science [0036-8075]:
http://sfx.sdln.net:3210/sfxsdb?sid=ALEPH&issn=0036-8075

Technorati Tags: Value Added Services, Categories, Subcategories, Journals, Topic Guide, Category Tool, SFX